Hydraulic Press Is The Use Of Hydraulic Transmission Technology For Pressure Processing Equipment

- Oct 13, 2017 -

Hydraulic press is the use of hydraulic transmission technology for pressure processing equipment, can be used to complete a variety of forging and press forming processing. Such as the forging of steel, the molding of metal structures, the pressing of plastic products and rubber products. Hydraulic press is one of the earliest applications of hydraulic transmission machinery, the current hydraulic transmission has become the main form of pressure processing machinery. In heavy machinery manufacturing, aviation industry, plastics and non-ferrous metal processing industry, hydraulic press has become an important equipment.

Hydraulic press system is based on the pressure conversion system, the system pressure, flow, power. Therefore, special attention should be paid to improve the prime mover power utilization and to prevent the occurrence of shock and vibration pressure, to ensure safe and reliable.

The hydraulic press according to the pressing process requires the master cylinder to be able to complete the rapid downstream of a deceleration to suppress a holding pressure delay of a pressure relief back to a stop (any position) of the basic working cycle, and the pressure, speed and holding time need to be adjusted. Ejector hydraulic cylinder is mainly used to eject the workpiece, requiring to achieve the top, return, stop the action. Such as sheet stretching, but also requires the top of the hydraulic cylinder rise, stop and pressure back and other auxiliary action. Sometimes need to use the blank holder to press the blank to prevent wrinkling around.

The maximum pressure (tonnage) of the main actuator (master cylinder) that can be output in the main movement is the main specification of the hydraulic press and has been serialized. The tonnage of the top cylinder is often 20% to 50% of the tonnage of the master cylinder. Extrusion cylinder top cylinder can be used about 10% of the main tonnage. Double-action tension hydraulic press tonnage tonnage, the general use of stretching tank tonnage of about 60%.

By the pressure processing technology needs to determine the speed of the master cylinder, usually in the pump directly by the hydraulic system, the working speed of not more than 50mm / s, fast forward speed of not more than 300mm / s, fast forward speed and fast forward speed equal.